In recent years, there has been a significant expansion in the development and use of multi-
modal sensors and technologies to monitor physical activity, sleep and circadian rhythms …

Actigraphy, a method for inferring sleep/wake patterns based on movement data gathered
using actigraphs, is increasingly used in population-based epidemiologic studies because …

Purpose A literature review is presented that aims to summarize and compare current
methods to evaluate sleep. Methods Current sleep assessment methods have been …

Wrist-worn accelerometers are increasingly being used for the assessment of physical
activity in population studies, but little is known about their value for sleep assessment. We …

Actigraphs are compact, lightweight, computerized accelerometer-based devices that have
been used to evaluate sleep and wake in humans for nearly four decades. 1 While …

Designing wearable systems for sleep detection and staging is extremely challenging due to
the numerous constraints associated with sensing, usability, accuracy, and regulatory …

Insomnia disorder is an economic burden and public health concern affecting up to one-third
of the population of the United States. It is mostly seen in older age groups, and often …

IN BRIEF Far from a simple absence of wakefulness, sleep is an active, regulated, and
metabolically distinct state, essential for health and well-being. In this article, the authors …

Background Actigraphy may provide a more valid assessment of sleep, circadian rhythm
(CR), and physical activity (PA) than self‐reported questionnaires, but has not been used …

Insomnia poses significant challenges to public health. It is a common condition associated
with marked impairment in function and quality of life, psychiatric and physical morbidity, and …